243359 has 4 divisors (see below), whose sum is σ = 245016. Its totient is φ = 241704.

The previous prime is 243343. The next prime is 243367. The reversal of 243359 is 953342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243359 - 2⁴ = 243343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584 + ... + 909.

It is an arithmetic number, because the mean of its divisors is an integer number (61254).

2²⁴³³⁵⁹ is an apocalyptic number.

243359 is a deficient number, since it is larger than the sum of its proper divisors (1657).

243359 is a wasteful number, since it uses less digits than its factorization.

243359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656.

The product of its digits is 3240, while the sum is 26.

The square root of 243359 is about 493.3143014347. The cubic root of 243359 is about 62.4332300271.

The spelling of 243359 in words is "two hundred forty-three thousand, three hundred fifty-nine".